From: Nicholas Piggin <npiggin@gmail.com>
To: linuxppc-dev@lists.ozlabs.org
Cc: Nicholas Piggin <npiggin@gmail.com>
Subject: [PATCH 2/2] powerpc/64s/hash: disable subpage_prot syscall by default
Date: Sun, 7 Jun 2020 22:02:09 +1000 [thread overview]
Message-ID: <20200607120209.463501-2-npiggin@gmail.com> (raw)
In-Reply-To: <20200607120209.463501-1-npiggin@gmail.com>
The subpage_prot syscall was added for specialised system software
(Lx86) that has been discontinued for about 7 years, and is not thought
to be used elsewhere, so disable it by default.
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
---
arch/powerpc/Kconfig | 1 +
arch/powerpc/configs/powernv_defconfig | 1 -
arch/powerpc/configs/pseries_defconfig | 1 -
3 files changed, 1 insertion(+), 2 deletions(-)
diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index 9fa23eb320ff..1701646f845d 100644
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig
@@ -834,6 +834,7 @@ config FORCE_MAX_ZONEORDER
config PPC_SUBPAGE_PROT
bool "Support setting protections for 4k subpages"
+ default n
depends on PPC_BOOK3S_64 && PPC_64K_PAGES
help
This option adds support for a system call to allow user programs
diff --git a/arch/powerpc/configs/powernv_defconfig b/arch/powerpc/configs/powernv_defconfig
index 2de9aadf0f50..afc0dd73a1e6 100644
--- a/arch/powerpc/configs/powernv_defconfig
+++ b/arch/powerpc/configs/powernv_defconfig
@@ -64,7 +64,6 @@ CONFIG_HWPOISON_INJECT=m
CONFIG_TRANSPARENT_HUGEPAGE=y
CONFIG_DEFERRED_STRUCT_PAGE_INIT=y
CONFIG_PPC_64K_PAGES=y
-CONFIG_PPC_SUBPAGE_PROT=y
CONFIG_SCHED_SMT=y
CONFIG_PM=y
CONFIG_HOTPLUG_PCI=y
diff --git a/arch/powerpc/configs/pseries_defconfig b/arch/powerpc/configs/pseries_defconfig
index dfa4a726333b..894e8d85fb48 100644
--- a/arch/powerpc/configs/pseries_defconfig
+++ b/arch/powerpc/configs/pseries_defconfig
@@ -57,7 +57,6 @@ CONFIG_MEMORY_HOTREMOVE=y
CONFIG_KSM=y
CONFIG_TRANSPARENT_HUGEPAGE=y
CONFIG_PPC_64K_PAGES=y
-CONFIG_PPC_SUBPAGE_PROT=y
CONFIG_SCHED_SMT=y
CONFIG_HOTPLUG_PCI=y
CONFIG_HOTPLUG_PCI_RPA=m
--
2.23.0
next prev parent reply other threads:[~2020-06-07 12:04 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-06-07 12:02 [PATCH 1/2] powerpc/64s: remove PROT_SAO support Nicholas Piggin
2020-06-07 12:02 ` Nicholas Piggin [this message]
2020-06-12 6:14 ` Michael Ellerman
2020-06-29 4:50 ` Nicholas Piggin
2020-08-17 19:14 ` Shawn Anastasio
2020-08-18 7:11 ` Nicholas Piggin
2020-08-18 20:59 ` Shawn Anastasio
2020-08-20 1:05 ` Nicholas Piggin
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